Shows how unreliable this poll is. 10 point swings in one night are indications of a flawed methodology.
This poll has ALWAYS been an outlier and this proves why.
This could be an outlier, but if there has been similar double-digit shift to a Republican candidate and from a Democratic candidate among black voters in at least the past 40 years of presidential polling during the final 90 days before the election, I don't recall it.
You don't recall it because it has never happened and it didn't happen except in the fantasy that is this flawed poll.